This guy appears to misunderstand the purpose of affirmative action / positive discrimination. It's not to make tokens out of people, but to try to remove systemic bias against groups underrepresented in a society or subculture - case in point, females being often underrepresented in tech conferences due to rampant sexism.
Site's down for me, Google cache link:<p><a href="http://webcache.googleusercontent.com/search?q=cache:http://blog.chrisleydon.com/2013/01/24/an-open-letter-to-laura-kalbag/&hl=en&client=firefox-beta&hs=shl&tbo=d&rls=org.mozilla:en-US:official&strip=1" rel="nofollow">http://webcache.googleusercontent.com/search?q=cache:http://...</a>